    
They may turn out to be relevant for the description of the recently discovered Weyl fermions [1]}, [2]}. By Eq. (REF ) the Weyl representation \(W^{\textsc {w} \chi }\)  is the orthogonal sum
\([0,\chi \textnormal {\tiny {\frac{1}{2}}},\chi ] \oplus [0,\chi \textnormal {\tiny {\frac{1}{2}}},-\chi ]\) 
